Pulp-beater.



H. O. WATSON.

PULP BEATER.

APPLICATION FILED JAN.10, 1914.

Patented Feb. 23, 1915.

2 SHEETSSHEET 1 H. C. WATSON.

PULP BEATER.

APPLIOATION FILED JAN. 10, 1914.

Patented Feb. 23, 1915.

2 SHEETS-SHEET 2.

HARRY C. WATSON, LANCASTER, OHIO, ASIGNOIt TO THE CLAFLIN: EN GINEEBING COMPANY, OF LANCASTER, OHIO, A CORPORATION OF OHIO.

PULP-BEATER.

iaaeaa.

' the following is a specification.

My invention relates to pulp heaters and aims particularly to provide an improved type of machine wherein the abutting surfaces are of'such structure that a highly improved class .of work may be turned out. The type of-maehine to which my 'mvention is partieularlyapplicable, is shown in Patent #86l,359, issued August 27, 1907.

I aim to provide'two cooperating members relatively movable with respect to each other, these members having their working surfaces formed of stone of suitable coarseness. Beaters of this-type are used in the finishing stages of treatin the pulp and are designed to separate and raw out the fibers rather than to cut them up into fine part1- cles. Ihave found that by'the use of stone,

these fibers may be'drawn out in the desired manner, thejstones being 1suitably shaped and grooved to facilitate the ready passage of the pulp therethrough. Further, the

' stones employed should preferably be filled which similar characters of reference desigwith pits and as these stones gradually wear away, new pits are presented to glve a satisfactory gripping effect.

The manner, in which the various stone Specification of Letters latent.

Patented Web. as, was.

Application filed January 10, 1914. Serial N 0. 811,328.

tom view of one of theflstoue fillings used in connection. with the cone, Fig. 9 is a side elevation of the structure shown in Fig. 8, and, Fig. 10 is a view in perspective of the assembled cone.

In the drawings, there is shown a base plate 1 which carries an upright standard 2 forming the bearing for one end of a drive shaft 3, which shaft is driven from any source of power by At its opposite end, the base plate 1 is formed to support a conical shell 5, the body portion of whichhas formed therein an inlet 6 at its inner end and whose outer end is covered by a cap structure 7 formed with an outlet opening 8. This cap structure preferably carries an out-hanging bracket 9 which forms the other bearing for the drive shaft 3 and which shaft, as will be sections are mounted in position and otherobjects of my invention will become more apparent from a further detailed 'description of the accompanying drawings, in

nate corresponding parts, and in which:

Figure 1 is a view in perspective of a beating machine constructed 1n accordance with my invention, Fig. 2 is a longitudmal section through the shell portion with the stone filling removed, Fig. 3 1s a section taken on line 3-3 of Fig. 2 and looking in the directionof the arrows, Fig.4 is a fra mentary section .of one portion of the she showing the stone filling n lts applied 081- tion, Fig. 5 is a longitudinal section 0 the cone usedto cooperate with theshell, one stone being shown in pos tion, Fig. 6 IS an end view of the structure shown in Fig. 5, lookin from the left, "Fig. 7 is a cross section through the shell and cone showing the manner of construction, Fig. 8 is a bot shown more clearly at 17 in the basic unit has been thus built up, a

presently shown, carries the cone member 10 shown particularly in Fig. 5, this cone member being longitudinally adjustable within the shell 5 by means of a well known structure under the control of a hand wheel 11. The structure of the shell 5 will be more apparent by referring to' Figs. 2, 3 and 4 from which it will be seen that the inlet opening 6' is in communication with the interior of this shell and also that an annular shoulder 12 is formed at its inner reduced end, which shoulderis grooved at an acute angle, as shown at 13. Radiating outwardly and in a, line oblique to a plane passing through the lon itudinal axis of the shell, are a plurality of ribs 14, which ribs, as will be seen,.terminate a. short distance from the outside end of the shell. This rib and shell structure forms the basic unit upon which the stone fillingis adapted to be mounted, one of the stones being shown at 15 in Fig. 4. From this figure, it will be apparent that the stones are of somewhat increased height over the depth of the lugs 14 and are formed at one of their ends as shown at 16 with a pointed structure to snugly fit the 100 groove 13 of the inner shoulder 12. The

entire surface of the shell unit is thus covered with stones of this type and in theremaining ?ace between the stones and ribs 14 an level of the stones themselves and. above the ribs 14, as well as the outer ends are filled in or packed with cement, as is Fig. 7. After means of the pulley 4.

also the spaces below the 104 it is mounted upon a suitable machine and the interior surface now formed of stone, is turned down to true, conical form. It will be understood that I use a stone till- 5 ing preferably because ofthe pits in these stones, 'for as they gradually wear away, new pits are always presented, as has been previously related.

- The cone proper which is mounted upon the drive shaft 3, is also surfaced with a filling of stone and is adapted to cooperate with the shell by being rotatably mounted therein. This come 10 comprises a basic hollow casting 18, which unit is formed with an annular shoulder 19 at its inner end, this shoulder being also grooved to a uniform angle, as is shown at 20. The over-hanging portion of the-shoulder, has its exterior surface also grooved as shown at 21 at an angle oblique to a plane passing through the longitudinal axis. Likewise, the outer end of this cone casting, is also formed with the roove 22, whose inner wall is grooved as shown at 28, and whose other wall is square as shown at 23, the grooves 20 and 23 being so formed as to incline in opposite di-. rections. These two grooves are adapted to form the medium of attachment for the stone filling, one of which stones is shown in Figs. 8 and 9, from which it will be seen that their inner ends are formed with an angle projection 24 of a contour parallel with the-angle 20. and whose bottom walls adjacent their upper ends are formed with a tenon 25, one of whose walls26 is adapted to lie in parallel relation with the 'wall 23 with the groove 22 and whose other wall is inclined to form the pointed projection 27 to follow the contour of the groove 23.

4 These stones are provided insutlicient number and -the distance between the point of the formation 27 andthe pointed end 24,

' is such as to permit their placement upon 'the cone body, whereupon they are moved rearwardly to the position shown in the lower half of Fig. 5. It will be noted that these stones are shown as being cut with squaresid'e walls, although this latter feature is not absolutely essential, as the inclination of the side walls depends upon the number of stones used. All of these stones forming the filling for the cone member, are

mountedin the relationshown in Fig. 7 and the space between them is filled or packed with cement as. shown at 28. Also, the spaces between the inner shoulder 19 and the pointed formations 24, on the lower ends of the stones, are filled with cement, as is shown at 29. In this manner, the stones are rigidly mounted in position to withstand the destructive tendency of the centrifugal. action as the cone is rotated. It must be apparent that in a short time, all

5 the cemented portions will become hardened,

whereupon it may be considered that the cemented portions 29 practically form an in-' tegral part-of the mner ends 24 of these stones. Outward movement then will be resisted by the inwardly over-hanging portion of the annular groove 19, while the pointed formations 27 at the opposite ends of the stones will engage the pointed end of the groove 22 to prevent outward movement at this portion.

After the cone has been thus assembled, it may be shaped to true form and the cementedportions leading from the grooves 21 of the shoulder 19 will be grooved as shown at 30, to present channels for the ready flow of the pulp as it is fed to the machine. The two stone surfaces cooperating, will cause a tearing action, thereby separating the fibers I in the desired manner. The coarseness of the comminuted pulp depends in a great measure on the distance between the grooves .30 and the closeness between the cone and the shell; I have found that by the provision of the staggered grooves 31 between each pair of grooves 30, the desired result may be gotten. It will be noted that these grooves are oblique to the medial lines of.

the spaces between each pair of grooves 30 and that these grooves are formed in the stones proper. As the pulp is fed to the machine, it is drawn outwardly by the centrifugal effect of the ro ting cone, the grooves forming small poc ets from which the pulp engages the stone surfaces of the shell filling and in this manner is continuously drawn between the two stone surfaces until finally it issues from the outlet opening 8. As has been before stated, the degree of fineness may finally be regulated by adjusting the cone itself toward or away from the shell by means of the hand wheel 11.

It will thus be apparent that I have pro vided a type of machine in which two relatively movable members are provided, the pulp being adapted to be fed between such members. The working surfaces of these relatively movable members are preferably all of stone formation, one of which may be grooved for the purpose specified, if so desired. After thecemented portions have become hard, it may reasonabl be considered that the entire surface is 0 one stone and of one texture. An advanta e of the all stone formation, raides in t e fact that gradual Wearing away will be uniform throughout and thus subseqpent truing up will become unnecessary. twill further be apparent that 'I have provided a particularly novel type of connecting means for the stone filling of both the cone and shell. The means for holding the filling carried by the shell in place, is such that rotative move-' ment of the stones themselves, is absolutely prevented, while the means provided for p laaaaaa I 4 Y J mounting the stones-upon the cone 19 such that they will'resist dismembernlent by contrifugal force and always retain themtrue tor-1m.

' What I claim, is:

1. In a pulp beater, a

of suitably shaped stones rigidly attached to both said shell and isaid cone. and dis- 7 "j'pcsed lengthwise thereon from apex to base,

7 grooved.

ttl

and cement packing between each pair of adjacent stones onthe same member to fill the spade therebetween, one surface of either said shell or cone haying its cement packing 2.l[n ,a pulp beaiter, a conical to which pulp is adaptedjto be fed and with dra, .a plurality of ribs on e' inner'surface of saidlshell, a plurality'of stones of greater thickness than the height of said ribs adapted to fit between said ribs a cement packing 'betw mid stones -and"covering said ribs, and a suitable cone wi said shell and adapted to be rota thin.

groove being formed with inclinwalls, a. plurality of stones adapted to be carried by,

d cone, the inner ends otsaid/stones hshaped to be parallel with theinclin a of said shouldera dove-tail projection adjacent the outer ends or Said stones adap ed to fit said groove, and a cement packing between said domes and between said 1 w and said doncs and between said shoulder d said a: i Pulp bter, a conical shellproconical shell to "which pulp is adapted to beefed and-withdrawn, a cone fitting within said shell and adap to be rotated therein, a plurality lll to be re .1:

ular

vided inlet and outlet l 'lli grooved annularshoulder around the inner end of Said shell, a plurality ofribs on the inner surface of said shell,- a plurality of stones of greater thicmess than the helght of said ribs and adapted to fit between said ribs, the lower ends of 'said stonesjbeing shaped to fit said shoulder, a cement packing between said stones and covering said ribs, a cone fitting in said shell and adapted to be rotated therein, and a plurality of and 'secure dto'the stones suitably shaped outer surface of said cone.v

. 5. In a pulp beater a conical vided with inlet an outlet openings, a grooved annular shoulder around the inner I end of said shell, a plurality of ribs on the shell prof inner surface of said shell, a plurality of I stones-of greater thicess than the height,

of said ribs and adaptedto fit between said ribs, the lower ends of said stones being shaped to fit said shoulder, a cement pack-' lng between stonesv and covering said ribs, a, cone fi In -1 in said shell and adapted Ml m1 h1'hlll8,1.Sl]0UlldeF onthe -inner-endot said'cona-said cone beg also formed with w o being formedwith, inclin w facing each other, a plty of stones adapted to be carri by sald cone, the inner ends of said I oove adjacent its outer end, said shoulder and said stones beingshaped to be parallel with the inclined wall of said shoulder, a dove tail projection adjacent the'outer ends of said stones adapted to fit said groove, d a cement packing between rsaid stones and be tween said groove and said stones and also between said shoulder and said fiones.

In M- 1 Molly whercol I all my new in presence of two witn 

